|Position|Club|Played|Points|Wins|Draws|Losses|Goals for|Goals against|Goal Difference|
|---|---|---|---|---|---|---|---|---|---|
|1|Córdoba CF|30|40|16|8|6|48|22|+26|
|2|CD Málaga|30|38|14|10|6|52|36|+16|
|3|Granada CF|30|36|15|6|9|48|34|+14|
|4|UD Las Palmas|30|35|15|5|10|47|39|+8|
|5|Recreativo de Huelva|30|33|13|7|10|43|42|+1|
|6|Levante UD|30|32|14|4|12|49|42|+7|
|7|Hércules CF|30|32|14|4|12|55|46|+9|
|8|Real Murcia|30|31|12|7|11|40|35|+5|
|9|Real Jaén|30|31|14|3|13|58|42|+16|
|10|Cádiz CF|30|28|12|4|14|43|52|-9|
|11|CD Cartagena|30|28|13|2|15|45|56|-11|
|12|CD Mestalla|30|27|11|5|14|50|49|+1|
|13|Albacete Balompié|30|27|10|7|13|27|32|-5|
|14|CD San Fernando|30|27|11|5|14|37|47|-10|
|15|Atlético Ceuta|30|23|8|7|15|33|48|-15|
|16|CD Villarrobledo|30|12|4|4|22|26|79|-53|

Question: what is the difference between the points earned by cordoba and the points earned by cd villarrobledo?
Answer: 28